This paper aims to study the recent increase in the spread of refined-crude petroleum prices in the US. We analyze the evolution of crude oil prices, refining costs, distribution costs, and taxes, comparing the pre and post covid periods. Fractional integration and cointegration methodologies...

This paper aims to study the recent increase in the spread of refined-crude petroleum prices in the US. We analyze the evolution of crude oil prices, refining costs, distribution costs, and taxes, comparing the pre and post covid periods. Fractional integration and cointegration methodologies...

This paper examines the statistical properties of energy consumption in the GCC countries applying fractional integration methods to annual data from 1980 to 2014. The results indicate that both the raw and the logged series exhibit a (statistically significant) linear time trend in the case of...

This paper examines the statistical properties of energy consumption in the GCC countries applying fractional integration methods to annual data from 1980 to 2014. The results indicate that both the raw and the logged series exhibit a (statistically significant) linear time trend in the case of...

This paper examines the statistical properties of energy consumption in the GCC countries applying fractional integration methods to annual data from 1980 to 2014. The results indicate that both the raw and the logged series exhibit a (statistically significant) linear time trend in the case of...

This paper investigates the issue of global warming in the behavior of the breakfast index commodities (sugar, cocoa, coffee, milk, bacon, orange and wheat) by comparing the statistical properties of the prices of these commodities and their relationship with U.S. temperature and precipitation...

This paper uses fractional integration techniques to examine the stochastic behaviour of high and low stock prices in Europe and then to test for the possible existence of long-run linkages between them by looking at the range, i.e., the difference between the two logged series. Specifically,...

This paper examines persistence, structural breaks and non-linearities in the case of five European stock market indices, namely the FTSE100 (UK), DAX30 (Germany), CAC40 (France), IBEX35 (Spain) and FTSE MIB40 (Italy), using fractional integration methods. The empirical results provide no...

This paper analyses the possible effects of the Covid-19 pandemic on the degree of persistence of US monthly stock prices and bond yields using fractional integration techniques. The model is estimated first over the period January 1966-December 2020 and then a recursive approach is taken to...